Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies
In the framework of a multisource thermal model, the transverse momentum distributions of charged particles produced in nucleus-nucleus (A-A) and deuteron-nucleus (d-A) collisions at relativistic heavy ion collider (RHIC) energies are investigated by a two-component revised Boltzmann distribution. T...
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Wiley
2014-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/742193 |
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| author | Hong Zhao Fu-Hu Liu |
| author_facet | Hong Zhao Fu-Hu Liu |
| author_sort | Hong Zhao |
| collection | DOAJ |
| description | In the framework of a multisource thermal model, the transverse momentum distributions of charged particles produced in nucleus-nucleus (A-A) and deuteron-nucleus (d-A) collisions at relativistic heavy ion collider (RHIC) energies are investigated by a two-component revised Boltzmann distribution. The calculated results are in agreement with the PHENIX experimental data. It is found that the source temperature increases obviously with increase of the particle mass and incident energy, but it does not show an obvious change with the collision centrality. Then, the values of chemical potentials for up, down, and strange quarks can be obtained from the antiparticle to particle yield ratios in a wide transverse momentum range. The relationship between the chemical potentials of quarks and the transverse momentum with different centralities is investigated, too. |
| format | Article |
| id | doaj-art-f3c789ecb87b4077bbc90f600d82c6b9 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-f3c789ecb87b4077bbc90f600d82c6b92025-02-03T06:08:28ZengWileyAdvances in High Energy Physics1687-73571687-73652014-01-01201410.1155/2014/742193742193Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC EnergiesHong Zhao0Fu-Hu Liu1Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaInstitute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, ChinaIn the framework of a multisource thermal model, the transverse momentum distributions of charged particles produced in nucleus-nucleus (A-A) and deuteron-nucleus (d-A) collisions at relativistic heavy ion collider (RHIC) energies are investigated by a two-component revised Boltzmann distribution. The calculated results are in agreement with the PHENIX experimental data. It is found that the source temperature increases obviously with increase of the particle mass and incident energy, but it does not show an obvious change with the collision centrality. Then, the values of chemical potentials for up, down, and strange quarks can be obtained from the antiparticle to particle yield ratios in a wide transverse momentum range. The relationship between the chemical potentials of quarks and the transverse momentum with different centralities is investigated, too.http://dx.doi.org/10.1155/2014/742193 |
| spellingShingle | Hong Zhao Fu-Hu Liu Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies Advances in High Energy Physics |
| title | Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies |
| title_full | Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies |
| title_fullStr | Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies |
| title_full_unstemmed | Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies |
| title_short | Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies |
| title_sort | chemical potentials of quarks extracted from particle transverse momentum distributions in heavy ion collisions at rhic energies |
| url | http://dx.doi.org/10.1155/2014/742193 |
| work_keys_str_mv | AT hongzhao chemicalpotentialsofquarksextractedfromparticletransversemomentumdistributionsinheavyioncollisionsatrhicenergies AT fuhuliu chemicalpotentialsofquarksextractedfromparticletransversemomentumdistributionsinheavyioncollisionsatrhicenergies |